在山東地區(qū)，電纜橋架因氣候潮濕、鹽霧腐蝕及工業(yè)環(huán)境復(fù)雜等因素，易出現(xiàn)銹蝕問(wèn)題，影響設(shè)備與使用壽命。針對(duì)這一行業(yè)痛點(diǎn)，需從材料選型、施工工藝、日常維護(hù)三方面構(gòu)建系統(tǒng)性解決方案。

　　In Shandong region, cable trays are prone to rusting due to factors such as humid climate, salt spray corrosion, and complex industrial environment, which affects equipment safety and service life. To address the pain points in this industry, a systematic solution needs to be constructed from three aspects: material selection, construction technology, and daily maintenance.

　　耐蝕材料選型：源頭降低銹蝕風(fēng)險(xiǎn)

　　Corrosion resistant material selection: reducing the risk of corrosion at the source

　　在材質(zhì)選擇上，熱鍍鋅橋架因其鋅鐵合金層具備優(yōu)異耐蝕性，成為山東沿海及化工區(qū)域的，其鋅層厚度達(dá)65μm以上，中性鹽霧試驗(yàn)可耐受1000小時(shí)。對(duì)于強(qiáng)腐蝕環(huán)境，可采用316L不銹鋼橋架，其鉻鎳鉬合金成分使點(diǎn)蝕電位提升300mV以上，較普通304不銹鋼耐蝕性提升3倍。鋁合金橋架則憑借表面氧化膜（厚度5-25μm）實(shí)現(xiàn)輕量化防腐，尤其適用于干燥室內(nèi)環(huán)境。

　　In terms of material selection, hot-dip galvanized cable trays have become the preferred choice for coastal and chemical areas in Shandong due to their excellent corrosion resistance of zinc iron alloy layer. The zinc layer thickness is over 65 μ m, and the neutral salt spray test can withstand 1000 hours. For highly corrosive environments, 316L stainless steel cable trays can be used, whose chromium nickel molybdenum alloy composition increases the pitting potential to over 300mV, which is three times more corrosion-resistant than ordinary 304 stainless steel. Aluminum alloy cable trays are lightweight and corrosion-resistant with a surface oxide film (thickness 5-25 μ m), especially suitable for dry indoor environments.

　　表面處理工藝：構(gòu)建防護(hù)屏障

　　Surface treatment process: Building protective barriers

　　防腐涂層施工需嚴(yán)格把控工藝參數(shù)。環(huán)氧富鋅底漆涂裝時(shí)，環(huán)境濕度需控制在80%以下，膜厚≥75μm，固化7天后進(jìn)行電火花檢測(cè)，確保無(wú)針孔缺陷。對(duì)于已銹蝕表面，需采用動(dòng)力工具除銹St3級(jí)，處理后4小時(shí)內(nèi)完成底漆涂裝。在青島某石化項(xiàng)目實(shí)踐中，采用無(wú)機(jī)硅酸鋅車間底漆的橋架，經(jīng)5年戶外使用，銹蝕面積仍低于1%。

　　The construction of anti-corrosion coatings requires strict control of process parameters. When applying epoxy zinc rich primer, the environmental humidity should be controlled below 80%, the film thickness should be ≥ 75 μ m, and after curing for 7 days, electrical discharge testing should be carried out to ensure no pinhole defects. For corroded surfaces, power tools should be used to remove rust to St3 level, and primer coating should be completed within 4 hours after treatment. In the practice of a petrochemical project in Qingdao, the bridge frame coated with inorganic zinc silicate workshop primer still had a corrosion area of less than 1% after 5 years of outdoor use.

　　銹蝕處理技術(shù)：精準(zhǔn)修復(fù)方案

　　Corrosion treatment technology: precise repair solution

　　輕度銹蝕可采用機(jī)械除銹法，使用旋轉(zhuǎn)鋼絲刷配合真空吸塵裝置，在浮銹的同時(shí)避免粉塵污染。對(duì)于點(diǎn)蝕坑洞，需用電動(dòng)砂輪打磨Fe3O4層，再填充環(huán)氧膩?zhàn)诱移健Ｄ畴姀S案例顯示，經(jīng)此處理后焊縫區(qū)耐鹽霧性能提升4倍。化學(xué)除銹則適用精密部件，5%檸檬酸溶液浸泡10分鐘后，配合超聲波清洗，可徹底去除微孔銹蝕。

　　Mild rust can be removed by mechanical rust removal method, using a rotating wire brush combined with a vacuum cleaner to remove floating rust while avoiding dust pollution. For pitting pits, it is necessary to use an electric grinding wheel to polish them to the Fe3O4 layer, and then fill them with epoxy putty for leveling. A case study of a power plant shows that after this treatment, the salt spray resistance of the weld zone is improved by four times. Chemical rust removal is suitable for precision components. After soaking in a 5% citric acid solution for 10 minutes, combined with ultrasonic cleaning, micro pore rust can be completely removed.

　　結(jié)構(gòu)加固策略：延長(zhǎng)服役周期

　　Structural reinforcement strategy: extending service life

　　當(dāng)橋架撓度超過(guò)L/200時(shí)，需實(shí)施加固。粘鋼加固法采用JGN建筑結(jié)構(gòu)膠，在腹板兩側(cè)粘貼3mm厚Q345鋼板，承載力提升幅度達(dá)60%。對(duì)于變形嚴(yán)重段，可采用碳纖維布加固，雙向纏繞后抗彎剛度增加1.8倍。濟(jì)南某數(shù)據(jù)中心實(shí)踐表明，加固后橋架通過(guò)100kg荷載測(cè)試，變形量控制在5mm以內(nèi)。

　　When the deflection of the bridge exceeds L/200, reinforcement is required. The steel bonding reinforcement method adopts JGN building structural adhesive, and 3mm thick Q345 steel plates are pasted on both sides of the web plate, with a 60% increase in bearing capacity. For severely deformed sections, carbon fiber cloth reinforcement can be used, and the bending stiffness increases by 1.8 times after bi-directional winding. Practice in a data center in Jinan has shown that after reinforcement, the bridge frame can withstand a 100kg load test and the deformation is controlled within 5mm.

　　智能維護(hù)體系：預(yù)防銹蝕復(fù)發(fā)

　　Intelligent maintenance system: preventing rust recurrence

　　部署物聯(lián)網(wǎng)監(jiān)測(cè)系統(tǒng)，通過(guò)溫濕度傳感器與腐蝕速率探頭建立預(yù)警模型。當(dāng)Cl?濃度超0.02mol/L或相對(duì)濕度＞75%時(shí)，自動(dòng)啟動(dòng)機(jī)與微正壓裝置。在煙臺(tái)港項(xiàng)目應(yīng)用中，該系統(tǒng)使人工巡檢頻次降低70%，銹蝕發(fā)現(xiàn)周期縮短15天。日常維護(hù)需遵循“三步清潔法”：先用工業(yè)吸塵器積灰，再用異丙醇擦拭油污，涂刷薄層防銹蠟，形成物理阻隔層。

　　Deploy an IoT monitoring system and establish an early warning model through temperature and humidity sensors and corrosion rate probes. When the Cl? Concentration exceeds 0.02mol/L or the relative humidity is greater than 75%, the dehumidifier and micro positive pressure device will automatically start. In the application of the Yantai Port project, the system reduced the frequency of manual inspections by 70% and shortened the rust detection cycle to 15 days. Daily maintenance should follow the "three-step cleaning method": first use an industrial vacuum cleaner to remove accumulated dust, then wipe off oil stains with isopropanol, and finally apply a thin layer of anti rust wax to form a physical barrier layer.

　　山東地區(qū)電纜橋架的銹蝕治理需貫徹“材料升級(jí)-工藝優(yōu)化-智能維護(hù)”全周期管理理念。通過(guò)科學(xué)選材、規(guī)范施工、精準(zhǔn)修復(fù)與數(shù)字監(jiān)控，可顯著延長(zhǎng)橋架使用壽命，降低全生命周期成本，為電力設(shè)施運(yùn)行提供堅(jiān)實(shí)保障。

　　The corrosion control of cable trays in Shandong region needs to implement the full cycle management concept of "material upgrade process optimization intelligent maintenance". Through scientific material selection, standardized construction, precise repair, and digital monitoring, the service life of cable trays can be significantly extended, the full lifecycle cost can be reduced, and solid guarantees can be provided for the safe operation of power facilities.

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